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Synthesis of Diethyl Carbonate from Ethyl Carbamate and Ethanol Catalyzed by ZnO-Fe2O3 from Zn/Fe Hydrotalcite-Like Compounds
Abstract:
ZnO-Fe2O3 catalysts were prepared by thermal decomposition of layered double hydroxides containing zinc and iron within the brucite-like layers and carbonate as the interlayer anion, then the hydrotalcite precursor and mixed oxides were characterized by ICP, XRD and N2 adsorption/desorption techniques. XRD patterns showed that both ZnO and ZnFe2O4 phases appeared for the mixed oxides and their proportion and crystalline degrees depended on the heat treatment temperature. Furthermore, these mixed oxides were tested for the diethyl carbonate (DEC) synthesis from ethyl carbamate and ethanol. More important, the DEC yield could reach to about 32.3% in the bacth reactor under the optimal reactions.
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1768-1771
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February 2012
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© 2012 Trans Tech Publications Ltd. All Rights Reserved
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